Multi-axis optical anti-shake and focusing device, camera module and electronic equipment

Abstract

The invention discloses a multi-axis optical anti-shake and focusing device, a camera module and electronic equipment. The multi-axis optical anti-shake and focusing device includes: an SMA optical anti-shake actuator including a fixed plate, a movable plate, and a first SMA wire connecting the fixed plate and the movable plate; at least two upper SMA actuators connected to the movable plate and comprising second SMA wires and driven parts, wherein the second SMA wires are electrified to contract to drive the driven parts to move along the Z axis; and a mirror bracket body, wherein each drivenpart is connected on the mirror bracket body. The at least two upper SMA actuators are arranged to drive the different driven parts on the mirror bracket body to move along the Z axis, and the mirrorbracket body can rotate, so that the multi-axis optical anti-shake and focusing device can compensate the influence caused by lens deflection in a rotating mode, and the imaging quality is improved.

Description

technical field [0001] The invention relates to the field of image stabilization technology, in particular to a multi-axis optical image stabilization and focusing device, a camera module and electronic equipment. Background technique [0002] At present, cameras with automatic focus or anti-shake functions have been widely used in smart products such as mobile phones, automobiles, unmanned aircraft, and security monitoring. Ordinary miniature auto-focus cameras usually use a voice coil motor to drive the lens to move up and down along the optical axis of the lens to achieve auto-focus; Absolute balance, so there will be a certain offset and deflection of the lens. [0003] In order to improve the above problems, an optical anti-shake device has been developed, which is based on the auto-focus voice coil motor, adding a motor that can drive the auto-focus voice coil motor and the lens together on a plane perpendicular to the optical axis of the lens The optical anti-shake ...

AI Technical Summary

Problems solved by technology

Ordinary miniature auto-focus cameras usually use a voice coil motor to drive the lens to move up and down along the optical axis of the lens to achieve auto-focus; Absolute balance, so it will make the lens have a certain offset and deflection

[0003] In order to improve the above problems, an optical anti-shake device has been developed, which is based on the auto-focus voice coil motor, adding a motor that can drive the auto-focus voice coil motor and the lens together on a plane perpendicular to the optical axis of the lens The optical anti-shake actuator that moves up to drive the lens to move in two directions perpendicular to the optical axis to compensate for the above-mentioned offset; although this optical anti-shake device can help the camera to obtain better image quality to a large extent , but it can only compensate for the three axial position offsets of the mutually perpendicular X-axis, Y-axis, and Z-axis (optical axis), and it is difficult to eliminate the impact of lens deflection more effectively

[0004] In addition, because the above-mentioned optical anti-shake device uses an autofocus voice coil motor, and the autofocus voice coil motor drives the lens to move through the Lorentz force generated by the energized coil in the magnetic field, and the camera module usually has sensors and other electronic components. Components, and the electromagnetic interference generated by the energized coil and magnetic field in the voice coil motor will affect the normal operation of other electronic components to a certain extent

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